added helper file

image picker, call, message, email, alertProtocol

Helper/ConversationManager.swift

@@ -0,0 +1,79 @@
+//
+//  ConversationManager.swift
+//  VariousManagerDemoApp
+//
+//  Created by JungpyoHong on 4/20/21.
+//
+
+import Foundation
+import MessageUI
+import UIKit
+
+struct MailFeedback {
+    let recipients: [String]
+    let subject: String
+    let body: String
+}
+
+struct MessageFeedBack {
+    let recipients: [String]
+    let body: String
+}
+
+class ConversationManager: NSObject {
+    
+    private weak var mailDelegate: MFMailComposeViewControllerDelegate?
+    private let mailController: MFMailComposeViewController
+    
+    private weak var messageDelegate: MFMessageComposeViewControllerDelegate?
+    private let messageController: MFMessageComposeViewController
+    
+    init(presentingController controller: NSObject, mailDelegate: MFMailComposeViewControllerDelegate, messageDelegate: MFMessageComposeViewControllerDelegate) {
+        self.mailDelegate = mailDelegate
+        self.mailController = MFMailComposeViewController()
+        self.messageDelegate = messageDelegate
+        self.messageController = MFMessageComposeViewController()
+            
+        super.init()
+        messageController.messageComposeDelegate = self
+        mailController.mailComposeDelegate = self
+    }
+    
+    func sendEmail(feedback: MailFeedback) -> MFMailComposeViewController {
+        if MFMailComposeViewController.canSendMail() {
+            self.mailDelegate = self
+            mailController.setToRecipients(feedback.recipients)
+            mailController.setSubject(feedback.subject)
+            mailController.setMessageBody(feedback.body, isHTML: false)
+        }
+        return mailController
+    }
+    
+    func sendMessage(feedback: MessageFeedBack) -> MFMessageComposeViewController {
+        if MFMessageComposeViewController.canSendText() {
+            self.mailDelegate = self
+            messageController.recipients = feedback.recipients
+            messageController.body = feedback.body
+        }
+        return messageController
+    }
+    
+    func makeCall(number: String) {
+        let number = number
+        guard let url = URL(string: "tel://\(number)") else { return }
+        if UIApplication.shared.canOpenURL(url) {
+            UIApplication.shared.open(url, options: [:], completionHandler: nil)
+        }
+    }
+}
+extension ConversationManager: MFMailComposeViewControllerDelegate {
+    func mailComposeController(_ controller: MFMailComposeViewController, didFinishWith result: MFMailComposeResult, error: Error?) {
+        controller.dismiss(animated: true, completion: nil)
+    }
+}
+
+extension ConversationManager: MFMessageComposeViewControllerDelegate {
+    func messageComposeViewController(_ controller: MFMessageComposeViewController, didFinishWith result: MessageComposeResult) {
+        controller.dismiss(animated: true, completion: nil)
+    }
+}